CN203645904U

CN203645904U - Rotary torch head device of plasma torch

Info

Publication number: CN203645904U
Application number: CN201320786725.9U
Authority: CN
Inventors: 慕龙; 黄峥嵘; 熊新阳; 李永宏; 刘军; 李自兵; 徐勇; 池建忠; 万振国; 沙锋; 靖志国; 周欢; 王志荣; 张方英
Original assignee: Xinjiang Corps Modern Green Chlor-Alkali Chemical Engineering Research Center (co Ltd); Xinjiang Tianye Group Co Ltd
Current assignee: Xinjiang Corps Modern Green Chlor-Alkali Chemical Engineering Research Center (co Ltd); Xinjiang Tianye Group Co Ltd
Priority date: 2013-12-04
Filing date: 2013-12-04
Publication date: 2014-06-11
Anticipated expiration: 2023-12-04

Abstract

The utility model relates to a rotary torch head device of a plasma torch. The device belongs to the technical field of machinery. The device comprises a rotary shaft, a transmission gear, a housing, a tungsten electrode, and an argon gas ring. The right half of the rotary shaft is of a hollow structure and is in threaded connection with an inner cooling water pipe. The lower part of the housing is provided with the argon gas ring, and the upper part is connected to a housing cover. A carrier gas enters a chamber formed by a spherical surface of the tungsten electrode and an inverted conical surface of a middle electrode via a tangential hole of the argon gas ring, and is compressed uniformly, with a stable gas flow field. A plasma arc is maintained at the center of an arc channel stably. A rotating electrode structure drives the root of the plasma arc to move uninterruptedly, so that the arc is prevented from discharging continuously at the same position, electrode erosion and gasification caused by local overheating are avoided, and thermal loads of electrodes are more even. Thus the service life of the torch head is extended, and the torch head can be used for long term on a V-shaped or linear plasma torch.

Description

A kind of plasmatorch rotation torch head unit

Technical field

The utility model belongs to plant equipment field, relates in particular to a kind of plasmatorch rotation torch head unit.

Background technology

The torch tip electrode of plasmatorch is the one of the main reasons of puzzlement plasmatorch operation steady in a long-term always, cause the reason of torch tip electrode severe attrition a lot, anode is more serious than negative electrode, mainly because cathode emission electronics will overcome electron work functon, reduce the degree of injury of electrode, and anode is subject to the electronics bombardment of high speed high energy, make the heat load of anode become large, loss increases.Next is running current, work atmosphere and the type of cooling, especially in powerful plasmatorch, because operating current is larger, the scaling loss of article on plasma torch torch tip electrode is also very large, patent No. CN202759658 U discloses a kind of V-type plasmatorch heat pipe-type anode, liquid-sucking core is set and electrode tip is linked together composition heat pipe structure at the inner chamber of copper pipe; In the time that plasma torch is worked, electric arc arc root is received in electrode tip center, be equivalent to the thermal source of heat pipe, electrode tip center is the evaporation ends of heat pipe, and copper pipe is condensation segment, and cooling water is entered as cooling copper tube and electrode tip by center, compare with conventional fine copper electrode or copper-tungsten electrode, cooling effectiveness significantly improves, and has alleviated the loss of anode head, but can only reach up to a hundred hours the useful life of electrode tip.Patent No. CN 101551118 B disclose plasma ignition device with long service life, be mainly used in plasma ignition of the boiler, this device is using the tubular igniter of two interlayers as anode, rear portion at it is provided with thermal insulation board, coil, and be provided with supporting plate at the rear portion of tubular device, speed change gear, insulated tube and cooling water pipe are installed successively on supporting plate.Electron emission ring is arranged on the circumference of rotating cathode, for being circular layout, under driven by motor, by gear, negative electrode is slowly rotated, although this device has extended the useful life of cathode electrode, complex structure, volume is large, airflow field is unstable, is not suitable for using on V-type or linear pattern plasmatorch.

summary of the invention

It is a kind of simple in structure that the purpose of this utility model is to provide, and volume is little, a kind of plasmatorch rotation torch head unit that can use for a long time on V-type and straight line plasmatorch.

Realizing the technical solution of the utility model is to comprise rotating shaft 1, travelling gear 2, housing 3, tungsten electrode 6, and argon gas compression ring 11, the right half part of rotating shaft 1 is hollow-core construction, be threaded with interior cooling water pipe 10, bearing 4 and bearing 9 are installed on the two ends of rotating shaft 1, water-cooled distributor 5 is arranged on rotating shaft 1 middle part, tungsten electrode 6 is arranged on the outside of water-cooled distributor 5, the right-hand member of water-cooled distributor 5 is formed rotation electrode and is arranged on the middle part of rotating shaft 1 by compact heap 7, rotating shaft 1, bearing 4, 9, rotation electrode and other appurtenances are arranged in housing 3, argon gas compression ring 11 is arranged at the bottom of housing 3, top is connected with case lid 8, tungsten electrode 6 can rotate around rotating shaft under the drive of travelling gear 2, to increase the ablated area of electrode.

The right half part of described rotating shaft 1 is hollow-core construction, and is provided with cooling water channel radially, and water can enter water-cooled distributor 5.

Described travelling gear 2 speed with 5-200 rev/min under the drive of motor is rotated, and drives tungsten electrode 6 to rotate.

Described water-cooled distributor 5 is provided with cooling water channel, is used to form cooling duct.

The inner surface of described tungsten electrode 6 and the outer surface of water-cooled distributor 5 form a cooling cavity, for cooling tungsten electrode.

Described tungsten electrode 6 can for spherical, be similar to spherical or other revolving bodies.

On described argon gas compression ring 11, having diameter is the tangential admission hole of 0.5mm-3mm, and the argon gas passing into can be rotated.

The carrier gas of described argon gas compression ring tangential hole enters the sphere of tungsten electrode and the cavity of target composition, compression to the carrier gas entering is even, airflow field is stable, and the electrode structure of rotation ceaselessly moves the arc root of plasma arc, has avoided the continuous discharge of electric arc in the same position of tungsten electrode.

A kind of plasmatorch rotation torch head unit that the utility model relates to, under the drive of stepping motor, tungsten electrode slowly rotates, avoid electric arc in the continuous discharge of same position and ablation, the swirling eddy tangentially entering is not subject to the impact of ball shape structure torch tip electrode, electric arc is compressed and is stabilized in the center of electrode channel, simple in structure, volume is little, easy for installation, little to the scaling loss of electrode, can extend useful life of plasmatorch.

brief description of the drawings

Fig. 1 is a kind of cutaway view of plasmatorch rotation torch head unit.

Fig. 2 is a kind of assembling schematic diagram of plasmatorch rotation torch head unit.

Fig. 3 is a kind of cutaway view of another execution mode of plasmatorch rotation torch head unit.

Drawing reference numeral illustrates: 1 is that rotating shaft, 2 is that travelling gear, 3 is that housing, 4,9 is that bearing, 5 is that water-cooled distributor, 6 is that tungsten electrode, 7 is that compact heap, 8 is that case lid, 10 is that interior cooling water pipe, 11 is that argon gas compression ring, 12 is target.

embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail:

Embodiment 1, with reference to accompanying drawing 1, accompanying drawing 2, a kind of plasmatorch rotation torch head unit, comprise rotating shaft 1, travelling gear 2, housing 3, tungsten electrode 6, and argon gas compression ring 11, the left end of rotating shaft 1 has screw thread, can be connected with external conductive slip ring, for rotation electrode provides stable voltage and current, the right-hand member of rotating shaft 1 has screw thread to be connected with outside two circuit rotary water-cooled joint, for tungsten electrode 6 provides cooling water, the right half part of rotating shaft 1 is hollow-core construction, be threaded with the left end of interior cooling water pipe 10, and be provided with inlet opening and backwater hole radially in the left and right of screw thread, with the cooling channel that forms rotation electrode together with cooling water runner on water-cooled distributor 5.The outside of water-cooled distributor 5 is provided with spherical tungsten electrode 6, the right-hand member of water-cooled distributor 5 is formed rotation electrode and is arranged on the middle part of rotating shaft 1 by compact heap 7, bearing 4 and bearing 9 are installed on the two ends of rotating shaft 1, rotating shaft 1, bearing 4,9, rotation electrode and other appurtenances are arranged in housing 3, and argon gas compression ring 11 is arranged at the bottom of housing 3, top is connected with case lid 8, is evenly equipped with the tangential admission hole of several diameters 0.5mm-3mm on argon gas compression ring 11.Travelling gear 2 can make rotation electrode rotate with the speed of 5-200 rev/min under the drive of stepping motor or other adjustable speed motors, enter the cavity of the sphere of tungsten electrode 6 and the inverted cone surface of target 12 composition through the carrier gas of argon gas compression ring 11 tangential holes, compression to the carrier gas entering is even, airflow field is stable, make the center of plasma-arc stable maintenance in arc channel, the electrode structure of rotation ceaselessly moves the arc root of plasma arc, avoid the continuous discharge of electric arc in same position, avoid causing because of local overheating ablation and the gasification of electrode simultaneously, make the heat load of electrode more even, improve the useful life of plasmatorch head.

Embodiment 2, figure, 3 is another execution mode of a kind of plasmatorch rotation torch head unit, and different is that tungsten electrode 6 face corresponding with target 12 is the face of cylinder, and other is identical with embodiment 1.

Claims

1. a plasmatorch rotation torch head unit, comprise rotating shaft, travelling gear, housing, tungsten electrode, argon gas compression ring, the right half part of rotating shaft is hollow-core construction, be threaded with interior cooling water pipe, bearing is installed on the two ends of rotating shaft, water-cooled distributor is arranged on rotating shaft middle part, tungsten electrode is arranged on the outside of water-cooled distributor, the right-hand member of water-cooled distributor forms rotational structure by compact heap, be arranged on the middle part of rotating shaft, rotating shaft, bearing, rotation electrode is arranged in housing, argon gas compression ring is arranged at the bottom of housing, top is connected with case lid, it is characterized in that tungsten electrode can rotate around rotating shaft under the drive of travelling gear.

2. a kind of plasmatorch rotation torch head unit according to claim 1, is characterized in that the right half part of rotating shaft is hollow-core construction, and is provided with cooling water channel radially.

3. according to claim 1,2 arbitrary described a kind of plasmatorchs rotation torch head units, it is characterized in that travelling gear speed with 5-200 rev/min under the drive of motor rotates.

4. according to the arbitrary described a kind of plasmatorch rotation torch head unit of claim 1-3, it is characterized in that water-cooled distributor is provided with cooling water channel.

5. according to the arbitrary described a kind of plasmatorch rotation torch head unit of claim 1-4, it is characterized in that the inner surface of tungsten electrode and the outer surface of water-cooled distributor form a cooling cavity.

6. according to the arbitrary described a kind of plasmatorch rotation torch head unit of claim 1-5, it is characterized in that tungsten electrode can for spherical, be similar to spherical or other revolving bodies.

7. according to the arbitrary described a kind of plasmatorch rotation torch head unit of claim 1-6, it is characterized in that argon gas compression ring is provided with the tangential admission hole that diameter is 0.5mm-3mm.